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Round|Natural|GIA

6.18ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2245040202

Certificate GIA 2245040202

Diamond specifications and retailer prices

From $93,058 USD
As of October 30, 2026
Save $59,712 USD (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $152,770 USD at MOH London · As of October 29, 2026
View at MOH London

About this 6.18ct natural round diamond

This 6.18ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2245040202. Listed at 8 retailers as of October 29, 2026, with prices from $93,058 to $152,770, a $59,712 spread on the same certified stone. MOH London lists it at $152,770. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

6.18
Carat
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2245040202
Dimensions11.74 × 11.71 × 7.17 mm
L/W Ratio1.00
Star length50%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle
Top View
11.74 mm11.71 mm6.18 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245040202
Side View
Table 59.0%Crown 35°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $152,770 USD|Low: $85,540 USD|High: $152,770 USD|Avg: $106,273 USD|+8.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7$85,540 USD
Retailer 4$93,058 USD
Retailer 5$93,582 USD
Retailer 2$97,749 USD
Retailer 6$98,627 USD
Retailer 8$102,737 USD
Retailer 3$116,110 USD
MOH London$152,770 USD

11 data points across 8 retailers

8 retailers$93,058 USD to $152,770 USD

B+
Cheapest Retailer
-
$93,058 USD
B+
Retailer 2
-
$93,582 USD
View
B+
Retailer 3
-
$97,749 USD
£76,968 GBP
View
B+
Retailer 4
-
$101,351 USD
View
Retailer 5
-
$106,846 USD
View
Price last confirmed 31 days ago
Retailer 6
-
$110,956 USD
View
Price last confirmed 33 days ago
B
Retailer 7
-
$116,110 USD
€110,581 EUR
View
Most Expensive
B
MOH London
C36C08406 · Oct 29
$152,770 USD
£120,291 GBP
View
7 more retailers have this diamond
Prices start from $93,058 USDSave up to $59,712 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
6.18ct Round
$93,058 USD